AIE Water-Soluble Polyene Compounds for Biomacromolecule Detection
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Solution Overview
Problem
Current fluorescent dyes used for DNA and protein detection suffer from aggregation-caused quenching, leading to reduced sensitivity and instability in aqueous environments, and existing sensors are often expensive and difficult to use for detecting biomacromolecules.
Innovation Solution
Development of water-soluble conjugated polyene compounds that exhibit aggregation-induced emission (AIE), which become highly emissive when aggregated, allowing for sensitive detection of biomacromolecules without the need for expensive metal complexes and improving stability and sensitivity in aqueous solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional fluorescent dyes are used in aqueous media, then they show good solubility, but they suffer from aggregation-caused quenching leading to reduced fluorescence intensity
Solution Approach 1:
The patent inverts the conventional fluorescent dye behavior by designing compounds that exhibit aggregation-induced emission (AIE) rather than aggregation-caused quenching (ACQ). Traditional dyes are designed to remain fluorescent in solution, but these novel polyene compounds are designed to be non-fluorescent in solution and become highly fluorescent upon aggregation, directly reversing the typical structure-fluorescence relationship
Solution Approach 2:
The patent changes the fundamental parameter of aggregation behavior from harmful (ACQ) to beneficial (AIE). By modifying the molecular structure of conjugated polyenes to incorporate AIE-active moieties, the compounds undergo a parameter change where aggregation state transitions from a quenching condition to an enhancing condition for fluorescence emission
2Measurement precision
If fluorescent dyes are used for biomacromolecule detection, then they provide sensitivity, but they show instability and photobleaching under ambient conditions
Solution Approach 1:
The patent replaces expensive, unstable traditional fluorescent dyes with economical, water-soluble conjugated polyene compounds that exhibit enhanced stability. The AIE-active polyenes are designed to be robust under ambient conditions while maintaining high detection sensitivity, effectively substituting fragile reagents with durable alternatives
3Illumination intensity
If lipophilic fluorescent dyes are used, then they show high fluorescence intensity, but they require organic solvents and are difficult to use in aqueous biological systems
Solution Approach 1:
The patent changes the solubility parameter of fluorescent compounds from lipophilic to hydrophilic by designing water-soluble conjugated polyenes with appropriate hydrophilic substituents. This parameter change enables the compounds to function in aqueous biological systems without requiring organic solvents, while maintaining AIE properties for high fluorescence intensity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The AIE-active water-soluble polyene compounds provide enhanced fluorescence intensity and stability, enabling effective detection of proteins and DNA with increased sensitivity and reduced photobleaching, while being more economical and biocompatible than traditional methods.
Implementation Method 1
water-soluble conjugated polyene compounds that exhibit aggregation induced emission
Implementation Method 2
Fluorescence (FL) techniques have emerged as a mainstream research and development area in science and engineering
Data Source
AI summary
The presently described subject matter is directed to water-soluble conjugated polyene compounds that exhibit aggregation induced emission, as well as to water dispersible, fluorescent, polymeric microparticles and/or nanoparticles comprising the water-soluble conjugated polyene compounds. Also provided are methods of making and using the compounds and particles. The described conjugated polyene compounds are useful as bioprobes for the detection biomacromolecules, as well as in the manufacture of sensors.